Burglar-alarm.



No. 777,535, PATENTED DEC. 13, 1904. J. W. PCKENS L A. J. ROSS.

BURGLAR ALARM.

APPLIOATION FILED AUG. s, 1904.

N0 MODEL,

woentou/ WMM UNITED STATES Patented December 13, 1904.

PATENT OFFICE.

JOSEPH W. PIOKENS AND ALBERT J. ROSS, OF JONESBORO, LOUISIANA.

BURGLAR-ALARNI.

SPECIFICATION forming part of Letters Patent N 0. 777,535, datedDecember 13, 1904.

Application iiled August 8, 1904.

To lf/ZZ 7,071,071@ t may concern:

Be it known that we, JOSEPH W. PIcKENs and ALBERT J. Ross, citizens ofthe United States, residing at Jonesboro, in the county or Jackson andState of Louisiana, have invented certain new and useful ImprovementsinBurglar-Alarms; and we do declare the following' to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to burglar-alarms; and one of the objects of thesame is to provide a reliable and eiiicient circuit-closing device whichmay be readily attached to a gate or door and which operates to close acircuit whenever the door is opened.

Another object of our invention is to provide a device of simpleconstruction and which may be connected up with a bell for giving' analarm when the circuit is closed upon opening a gate or door.

These and other objects are attained by means of the construction andarrangement illustrated in the accompanying drawings, in whicl Figure 1is a diagram illustrating a burglaralarm made in accordance with ourinvention. Fig'. 2 is a front view of a gate-post provided with a springcircuit-closer. Fig. 3 is a rear elevation of the same. Fig. 4 is atransverse section taken through the gate-post and showing thevarrangement of our circuit-closing device.

Referring to the drawings for a more particular description of ourinvention, the numeral 1 represents a gate or door upon which isarranged a spring circuit-closing device. Secured at one side of thegate is a latch-keeper 2, having secured thereto at one end a spring 3,said spring extending away from thelatchkeeper at its opposite end andhaving secured thereto a bolt 4, which extends through the latch-keeper,through the post, and at the opposite side of the post is provided witha contact-nut 5. A slotted plate 6 is secured to this side of the post,and a contact-wire 7 is secured by binding-screws 8 9 at one side of theslotted plate, the contact-nut 5 normally serai No. 219,984. da model.)

bearing upon the connection 7. The line-wire 10 is attached to the bolteand is held in place by a nut 11. Secured to a binding-post 12 is a wire13, and said wires 10 and 13 are covered with waterproof insulation andare led to the ground and extended to the house and wired into a room orrooms provided with a battery 14, extending from thence to a switch 15and to a bell 16. Then the gate 17 is closed, the spring' 3 is pressedtoward the latch-keeper 2 and the contact-nut 5 is moved out of contactwith contact-wire 7, thus breaking the circuit. Should, however, thegate be opened, the spring' 3 pulls the bolt outward until thecontact-nut bears against the wire 7 and closes the circuit, and thusringing the bell 16 until the gate is again closed or until the switch15 is operated to cut out the bell.

It will be obvious that our device may be used in connection with a'dooras well as a gate and that the latch-keeper 2 may be dispensed with anda plain plate for supporting the spring substituted therefor.

Our invention is or' simple construction and can be made availablereadily for its purpose.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-e 1. A burglar-alarmcomprising alatchkeeper, a fiat spring secured at one end to said latch-keeper' andhaving its opposite end normally extending away from said latch-keeper,abolt secured to said spring and passed through the latch-keeper, acontact-nut on said bolt, a contact-plate, electrical connectionsbetween the nut and an alarm-bell, and a gate or door adapted to movethe spring to break the circuit, substantially as described.

2. A burglar-alarm comprising a gate-post having secured thereon alatch-keeper, a spring secured to said latch-keeper at one end andhaving its opposite end extending away from said latch-keeper, a boltsecured to saidspring and passing through the latch-keeper, a gatepost,a plate on the opposite side of the gatepost having a contact-wiresecured thereto, a contact-nut on the bolt, a wire secured thereto bymeans of a separate nut, a binding-post, a contact-wire and connectionsbetween the contact-nut, the binding-post and the battery, a our handsin presence of two subscribing Witswitch, a bell and a gate adapted whenclosed nesses.

to Inove the spring and break the circuit be- JOSEPH V. PICKENS. tweenthe contact-Wire and contact-nut and to ALBERT J ROSS. 5 permit thecircuit to be closed When the gate Witnesses:

is open, substantially as described. V. G. STEWART,

n testimony whereof We have hereunto setJ XV. S. JONES.`

